The battery on the flagship device lasts for exactly 8 hours, according to test results published by phoneArena.

Considering this phone has a 6.2 inch display and a powerful EXYNOS 8895 processing chip, that's not too shabby, according to phoneArena.

There were concerns that the 3,500 mAh battery might not provide enough power but phoneArena said this wasn't the case.

Flagship phones and how long their batteries last:

iPhone 7 Plus: 9 hours and 15 minutes

Samsung Galaxy S8+: 8 hrs exactly

iPhone 7: 7 hrs 46 mins

Huawei PT: 7 hrs 42 mins

Google Pixel XL: 7 hrs 19 mins

Galaxy S7 Edge: 7 hrs 18 mins

OnePlus 3T: 5 hrs 41 mins

In fact, the battery life on the Samsung Galaxy S8+ exceeds that of other large phones, including the Google Pixel XL (7 hours 19 minutes) and the OnePlus 3T (5 hours 41 minutes). However, it doesn't last quite as long as the battery life on the iPhone 7 Plus (9 hours 5 minutes).

After going through phoneArena's "standard test", which it uses to compare all devices on equal grounds, the Galaxy S8+ also beat the Galaxy S7 Edge (7 hours 18 minutes). The screen was tested at "200 nits" of brightness, which is comfortable for indoor use, according phoneArena.

In addition to looking at how long the Samsung Galaxy S8+ battery lasts, phoneArena also looked at how long it takes to charge.

Charging the Samsung Galaxy S8+ from 0% to 100% takes just 1 hour 40 minutes, which is one of the fastest charging times that phoneArena has ever seen.